Emergency services were called to a home on Traders Way at Heddon Greta, east of Cessnock, on the night of December 27, 2022, over reports of a shooting.
Despite efforts by paramedics, 25-year-old Davies-Scott died at the scene.
Strike force homicide investigators were told a group broke into the house before shooting Davies-Scott.
The suspected home invasion gone wrong unfolded in front of his pregnant partner and two children, aged two and four, who were uninjured.
A woman, 52, was also at the home and suffered minor injuries after trying to fight off the alleged attackers.
A man from Elermore Vale, 25, was arrested about 4.50am today as police conducted a search of a home.
“He was taken to Waratah Police Station where he was charged with murder,” police said.
A woman, 32, was charged on January 5 with hindering the investigation and possessing a prohibited drug and will face court next week on Tuesday.